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一辆方圆4100发动机没力,耗油又多;车在静止状态下加油门,发动机加速灵敏,但就是在路上试车,车速跑不起来,最高车速也就只能跑50km/h。油泵在试验台上检查,也看不出什么问题,油量和转速都能达到要求规范。但装到车上路试,问题就是解决不了。后来又把发动机4配套(缸套、活塞、活塞环、气门)换掉,气门也研磨了,装车试验还是和原来一样。 第二次又把油泵拆下来检查,解体柱塞泵油元件,发现柱塞、出油阀磨损并不严重,
A radius of 4100 engine powerless, fuel-efficient; car in the stationary state throttle, the engine speed sensitive, but that is on the road test, the speed can not run, the maximum speed can only run 50km / h. Check the pump on the test stand, but also do not see any problems, fuel and speed can meet the requirements of norms. However, put the car on the road test, the problem can not be solved. Then again the engine 4 (cylinder liner, piston, piston ring, valve) replaced, the valve is also grinding, loading test or the same as the original. The second time the pump removed to check, disassemble the plunger pump oil components and found that the plunger, the valve wear is not serious,